Surveillance Webinar: Airborne Hazards: Surveillance and Clinical Considerations-Surveillance Webinar: Airborne Hazards Surveillance and Clinical Considerations Recording

Video Transcription

Video Summary

This webinar (part of ACPM’s second cycle on surveillance systems and environmental health) reviews airborne hazards through an occupational, environmental, and clinical lens, with special focus on deployment-related exposures in veterans. Faculty introduce core exposure science: airborne hazards include gases and particulates, with health effects influenced by particle size (e.g., PM10 vs PM2.5 vs PM1) and gas water solubility (upper-airway vs distal lung injury). The session contrasts occupational exposures (often higher intensity, identifiable, regulated) with ambient/community exposures (lower intensity but broader impact), and infectious versus non-infectious airborne risks.<br /><br />Key regulatory frameworks are summarized, including OSHA standards (PEL, TWA, STEL, ceiling limits), NIOSH/ACGIH recommendations, confined-space requirements (oxygen 19.5–23.5%), respiratory protection programs, and distinctions between hazard surveillance (industrial hygiene monitoring) and medical surveillance (clinical exams, spirometry, imaging). Public-health monitoring is covered via the Clean Air Act and EPA’s National Ambient Air Quality Standards for six “criteria” pollutants (CO, lead, NO₂, ozone, SO₂, PM2.5/PM10), noting long-term declines in these pollutants.<br /><br />Clinically, the faculty review mechanisms and exemplar diseases: simple and chemical asphyxiants (e.g., CO, cyanide, hydrogen sulfide), irritant gases (chlorine/chloramine, NO₂ “silo filler’s disease”), occupational asthma (sensitizer- vs irritant-induced/RADS), bronchiolitis obliterans (“popcorn lung” from diacetyl), hypersensitivity pneumonitis, and pneumoconioses (silica, coal, asbestos). Surveillance spirometry thresholds (e.g., ≥15% FEV1 decline) are discussed.<br /><br />The final section addresses military deployments (burn pits, oil well fires, dust storms, pollution), emphasizing PM2.5 as a shared exposure driver and introducing the VA’s deployment-related respiratory disease (DRRD) framework, evaluation toolkit, and the Airborne Hazards and Burn Pits Center of Excellence/PD-C-PEN research network.

Keywords

airborne hazards

occupational exposure

environmental exposure

deployment-related exposures

veterans respiratory health

particulate matter PM2.5 PM10

gas water solubility

OSHA PEL TWA STEL

NIOSH ACGIH exposure limits

Clean Air Act NAAQS criteria pollutants

medical surveillance spirometry FEV1 decline

burn pits VA DRRD framework